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Ardelia Guide and Best Builds

Last updated on Jan 20, 2026 at 20:31

Ardelia Guide & Best Builds

Welcome to our Ardelia build guide for Arknights: Endfield. Ardelia is a 6-star Arts Unit Supporter Character available in Arknights: Endfield who utilizes the Nature element.

In our Ardelia guide, we'll cover everything you need to know to get the most out of your Ardelia, from building the best Gear and Weapons, to important stat priorities and combos.

Ardelia's Best Weapons

Infliction: Tidal Murmurs (4/9):
Secondary attribute +25.6%.
After the wielder consumes Corrosion, target enemy suffers Arts DMG Taken +16% for 25s.
Effects of the same name cannot stack.

is Ardelia's signature weapon. It dramatically increases her HP Treatment output, helping her keep your entire team healthy, while further boosting her usefulness for teams that deal a lot of Arts damage. When consuming on the target, enemies will take even higher damage while Ardelia wears this weapon, as long as Ardelia is the one who consumes the Corrosion by using her Battle Skill.

Inspiring: Mortise-and-Tenon Analysis (9/9):
Main Attribute +14%.
Arts Intensity +70.

If you don't have her signature Arts Units, is a decent alternative that fully focuses on buffing the wielder's attributes instead of providing a conditional bonus effect.

Best Gear for Ardelia

3-piece set effect: Wearer's HP +1000.
When the wearer applies Amp, Protected, Susceptible, or Weakened, other teammates also gain ATK +16% for 15s. This effect cannot stack.

The set will enhance the frequency and efficiency of Ardelia's Ultimate, while also granting the entire team bonus ATK whenever she applies Susceptibility via her Battle Skill.

Body: Tide Surge Offpiece — Will, Intellect, Arts Intensity
Hand: Eternal Xiranite Set — Will, Intellect, Ultimate SP Gain
Kit 1: Eternal Xiranite Set — Will, Intellect, Ultimate SP Gain
Kit 2: Eternal Xiranite Set — Will, Intellect, Ultimate SP Gain

Leveling Gear for Ardelia

While the above gear set is the optimal choice, it might take you some time before you will be able to craft it. Below are some of the more early and mid-game sets that we recommend until you've reached the pinnacle of craftsmanship.

3-piece set effect: Wearer's Will +50.
When the wearer's HP is below 50%, Treatment Effect +30%.

The set will serve as a decent alternative until you can craft her best set, granting additional healing if you happen to be gravely injured.

Body: Tide Surge Offpiece — Will, Intellect, HP
Hand: Mordvolt Resistant Set — Will, Intellect, Heal Output
Kit 1: Mordvolt Resistant Set — Will, Heal Output
Kit 2: Mordvolt Resistant Set — Will, Heal Output

Ardelia's Skill Priority

Skill Priority: > > >

Almost all of the combos with other Operators rely on Ardelia casting her Battle Skill, which is why you should absolutely prioritize it over anything else. Her Combo Skill and Ultimate are both useful as well, while her Basic Attack can be left alone until you can afford to spend resources on leveling it up.

How to Play Ardelia

What might look like a difficult kit at first, is actually quite simple. Ardelia is built around providing HP Treatment to her teammates by spawning zones of Healing, which you can stepped into with the Controlled Operator to either heal themselves, or the most injured party member, if the Controlled Operator is at full health.

Simultaneously you will want Ardelia to buff the team, by applying Corrosion and then consuming it with her Battle Skill. While normally this would require the set up of two other Operators, Ardelia can do it almost all by herself. Her Combo Skill applies a temporary Corrosion effect already, which can be triggered by hitting any enemy that isn't currently inflicted with any Arts Inflictions or statuses with a Final Strike of your Controlled Operator.

You will therefore want to be careful with using Ardelia's skill, until the enemy is stripped of their debuffs, to then trigger her Combo Skill with a Final Strike, before consuming the freshly applied Corrosion with her Battle Skill. The enemy will now be sitting there with a Physical and Arts Susceptibility, while the rest of Ardelia's team can take them apart.